Jem Marsh
Speedex Castings & Acc. Ltd.
33 Jubilee Street

Speedex produced a prototype in 1953 and went into production between 1958-1961. An aluminium tub based on a 6′ 3″ and 6′ 9″ chassis. for only ¬£49. They ¬†also produced cylinder heads, castings and other components such as the unique wheels found on them. In April 1962 all stock was taken over by Cambridge J.M.